Treadmill



FIG. 1 is a perspective view of a treadmill showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of the control panel is for illustrativepurposes only and forms no part of the claimed design.

The ornamental design for a treadmill, as shown and described.